Welcome Explorer_2022,
Congratulations on your new iPhone!
Thank you for using Apple Support Communities. Based on your post, you're new to iOS and want some help connecting your Bluetooth earbuds or Samsung buds to the iPhone. We'll do our best to assist with this.
In order to pair the Samsung buds to the iPhone, try steps in: Set up and use Bluetooth accessories on iPhone
If you have troubles, see: If you can't connect a Bluetooth accessory to your iPhone, iPad, or iPod touch
If these are Galaxy Buds, you may need the Samsung app from the App Store: Samsung Galaxy Buds on the App Store
Lastly, here is a resource from Samsung: How to connect your Galaxy Buds
Let us know if you get stuck or have issues after these suggestions, take care.